The other day my male jumped in and out of my truck and was holding up a rear leg afterwards. Didn't see it directly so not sure what happened. Been 3 days and he's still favoring it a bit. Now it happened to be we took a stacked photo weekend before last. This morning while manipulating his joints and looking for swelling/pain, I noticed I couldn't extend his foot at the hock as far as the other side, or as far as the stacked photo had the same foot extended. I can't detect any swelling, but he definitely seemed a little less inclined to have me extend that foot at the hock vs. the other side. Thoughts?